Lock mechanism



Aug 17, 1943- I J. H'. BOOTH ETYAL 2,327,243'

LOCK MECHANISM Filed May 2s, 1942 2 sheets-sheet 2 INVENTORS J NNIE IRENE BOOTH TTORNEY Patented Aug. 17, 1943 UNITED' STATES PATENT ortica LOCK MECHANISM John Holt Booth vand Jennie Irene Booth,

Lapley, England Application May 29, 1942, Serial No. 444,984 Y In Great BritainJuly 7, 1941 Y 18 Claims.

said operating means racting iirst to renderv the loading springwholly `or partially ineflectivelfor opposingmovement oiY the Alock barv towards the retracted position, and then to move the lock bar into the retracted position 'against the pressure of the light actuating spring.

The loading spring may act upon a loading ylever capable ofjpivoting 'and sliding motion, and one arm of this lever `may bearranged substaned to engage theV end'thereof.

.Alternatively the loading spring may be `con'- nected to a pivoted arm acting'upon a loading lever capable of pivoting and sliding ymotion and having a portion normally disposed closelybetially in vline-with theiock bar `and may be adapt- V hind the end of the lock bolt.

In such an arrangement the loading leverV may be adapted'to slide in a direction transverse to the direction of movementcf the lockbolt and may engage a guide which limits its movement under the inuence of the loadingV spring in the direction towards the lock bolt. A1 l In such `an arrangement the loading lever'may l beprovided with a recess which canbe moved by the lock operating means into a position behind the lock bolt.

' The. light actuating spring. may act upon a primary actuating lever engaging the lock boltand also engaging the loadinglever to that when the latter isdisplaced to render the loadingspring wholly or partially ineffective for opposing movement of the lock bar towards the retracted position, the primary actuating lever Y is operated thereby to withdraw the lock bar.

A secondary actuating lever within the casing ,may be Aprovided adapted to `be moved by the operating means ofthe lock Vand adapted to en'- gage and operate the primary actuating lever when the operatingmeans releasing direction. l

vThe operating means for the'lock may comprise a primary operating member and a secondary are moved in the lock operating member, these two members being opl erable from opposite sides of the door-to which the lock is applied, the primary operating member operating the primary actuating leverthrough the medium of the loading lever. A g

The secondaryoperating lever Within the lock casing may be adapted to be operated by the secondary operating member.y

The secondary actuating lever within the lock casing may be provided with a lateral shoulder adapted to move the loading lever into the inoperative position, i. e. the position in whichV the loading spring is partially or wholly ineiective, before the secondary actuating lever acts upon the primary actuatinglever to withdraw the lock but. l

The primary` operating member may be formed as a push pin having itsV end engaging the load- -ing lever, and it may be adapted to be adjusted angularly about its own axis, vsuchangular movement being used for locking the secondary actuating lever. l

In such an arrangement the push pin forming the primary operating member may have one end formed` with a lateral projection or with a recess, which projection or recess is used to lock or release the secondary actuating lever when "the primary operating member is turned on its own axis into the appropriate position. The arrangement may be such that when the primary operating member is in the position in which it locks the secondary actuating lever, it can still operate to Withdraw the lock bolt and when released Vwill remain in the said position.

Referring to the drawings:

Figure l is a sectional View side elevation showing one construction.

Figure 2 is a sectional view on line 2--2 of Figure 1.

` Figure V isa sectional view on line 3 3 of Figure 1. j

Figure i is a View partly in section taken through the primary operating member.

Figure 5 is a section-on line 5 5 of Figure 4.

Figure 6 is a fragmentary view in sectional side elevation showing a modified construction.

Figure 7 is a sectional View in side elevation showing a further construction.

In the construction shown, the lock casing I9 is of rectangular form and is made of sheet metal pressings Il, I2, I3. In opposite ends of the lock casing I0 and in alignment, openings I 4, I5 are provided, one, I4, for the nose I5 of the lock bar I1, and the other I5, for the long arm I8 of the loading lever I9 which projects from the end of the casing. Y

Further, this end of the lock casing I0 isY provvided with a small lug 28 at the lower corner 'the usualnose IG adapted to give a slam action.

'Ihe lockbaris guided by a pair of plates 22 secured within the casing and engaging opposite edges of the lock bar. Further, the lock bar is slotted at 23, and in the slot operates one end 24 of the primary'actuating lever ..25-pivoted to the casing at'26.

rThe loading lever 53 comprises one arm l,A which is arranged in alignment with the lock A bar E7, and one end of this lever engages't'net-end of the lock bar. At its other end therloading lever is slotted longitudinally at 2J and through fthev slot passes a pin 2S secured to the door 2Q-'and to a bracket 'ill carried on the .innerside'o :the

door in which thelock is mounted. Y Pirojectingr transversely to the main arm i8 of the loading lever is its secondary arm 3) which is very short in relation .to the length of themain .armpand connecting this short erin with the arm .2J ,proljecting frorntheendof the .lockcasing .Illisthe .loading spring fSl which ;isastrongtensionspling and tends to slide :the loading .lever t9 .ign-.anond- Wise .direction ltowards the .lock bar.

yT13-he lopening l5 gin `the end of the loclocasing ling the knob to be turned through an angle of {12W/ and retained in any of three positions by the spring 421.

Elhe lowerzendcf the push pin is recessed or r chamfered at one side 49 and gives clearance for the 4movernentof the secondary actuating lever n.314, .but ifjthe 'push pin is turned through an .through which the loading leverripasses is .sufficiently wide .to .allow the loadinglever 4.tobe dis placed downwardly out of line with the lock fbar.

'lhe .primary actuating llever l25 -is v-rhounted upon a-pinjtfextending transversely through the lockcasin'g, .and it .is .in the Aform of a bell -cranlr lever, .one armfo .which .has itsV end engaging.in zthe slot l.23.of the lock-bar-'and the .other :arm .of which is provided with a laterally projecting lug 32 engaging V,the ,underside .of .theloadin-g lever .L9 and .with a second .lug .3.3 Whiohis adapted fto .be engaged by .the secondary actuating lever ,34.

The secondary .actuating @lever 341sof `U shape .and has .the end .of one of .its ,limbs .pivoted .on the .pin v.iii which accommodates .the I.primary .actuating lever, .the .edge .of .this limb being ,en-

gaged by the lug .33 .on .the .primary actuatingy :lever 25, .the arrangement being :$11,011 that yif .the secondary actuating over .is :turned `one direction, .the ,motion is .transmitted :to Ythe primary actuating lever .but reverse movement of .the secondary actuating .lever .is not .transmitted to the primary actuating lever.

On one side the secondary.actuatinglever may .befprovided witha thickening plate ,3510i .L shape, one end of which, forms a lateral shoulder and is adapted `to ell-Sge the loading .lever IS. If this plate is provided, the secondary actuating lever on :being .turned in a clockwise vdirection (Figure l), pushes ,aside ythe load-ing ,lever-.ls and relieves .the lock bar 3 of the pressure 1.01" @the loading :spring 3.5 and valso .acts .upon the pri-mary actuating lever. E this thickening .plate .3511's omitted, however (see Fleur-e .6), .the U .shaped secondary actuating lever ,e4 acts 'only upon Athe primary actuating lever i5 and withdraws fthe l lock :against the fzull pressure .of the .loading spring 3i,

The primary .operating member takes the term of a pushV .pin `il? slidably `mounted A.in i .an esoutcheon 3S adapted .to be secured to .a sui-table par-t 3.9 of .thedoor This push .pin .3.1 forming the primary operating member of .the lock is disposed .vertically and. operates against .the light pressure derived in this .case from the loading spring. The pin .extends .down through Owning 4,! inthe top of the lock casing, l

The upper end of the pin 32 is of -nonrcilrcul'as section. onda kno-b j atte hed to it,Y this knob being marlzedii desi .Y .or `formed.'with-a radially projjectinT il (seeigujre 3) toindicate the posit-.ion into which it hasbeen turned.

angle to either of its other positions, then its -loWer Vend acts as a stop to lock the secondary A,actuating .lever 3.4 .against movement.

After .the pin .31 forming the lprimary operating .member .has .been .depressed .to withdraw the bolt and is released, it automatically moves .upwardly ,into `its iirst position, vbut vif vit has been .turned into ,the .position .in which .it .locks the laver ..34 ,beore depression, 'it remains in .this .position untilit is moved through a .suitable angle `about its own axis.

The external or secondary .operating member may Ataire 4the forro ,of .a lever '.handle EG .or .a pivoted ring or lany .other adaptedV to ,be mounted .upon .anescntcheon .platel .upon the exterior of the door, and. this secondary .operatin-g'member `has an .arm 25,2 projecting through Ql'ening into theloclz cas'ingand adapted to engage the free end of Vthe free limb .of .the U shaped secondary actuating llever "34,

Preferably the .escutcheon `plate 5l .-is .provided with a pin ,tumblerilock indicated at T3 which can be used to lock the 'leverfill against movement, and which of course .can be operated by ka key.

Two ofthe recesses 45, 45 and '41 in the boss -4'8 are suficien'tly long to allow the push ,pin 37 to be pushed downwardlyt release 'thelock, but the third recess 41'1's shorter'and prevents the pin 31 from being pushed downwardly so that the lpin cannot be operated until it is given a turn through-120 about its oWn axis.

This provision enables the door 'to 'be 'locked from theinsi-de and prevents itfrom being opened accidentally and makes it moredi'fcult for the door to be opened by a child from the inside of a vehicle -as two movements are required biefore 'the lock is released, i. e. the turning of the pin 31 about its'own axis, and the downward movement of the pin subsequent to the turning movement.

As will vbe seen, the lock vconsists .of parts most `of which can be produced as sheet metal pressings, and -all of which can be very 'quickly assembled and secured-together. Further, the lock is yvery compact 'and occupies rless space than' is `usual for this type of lock. Inthe construction 3;' heretofore described, however, the loading lever .other end to an larm 56 which is pivoted vat 51 to a pin mounted in the casing. InV this way the loading spring V54 acts upon the loading lever as one end of the arm 56 bears upon a at surface 58 of the loading lever 53. This end of the loading lever 53 is adapted to slide against a rectilinear guide 59 provided in the lock casing, so that the motion of the loading lever towards the lock bar under the influenceof the loading spring Mis limited by the guide 59. Y The loading lever is provided with a slot 6!) which engages a pin 6| xed in the lock'casing so that the loading lever can slide downwardly and also pivot about the aXis'of the pin 6I.

At one edge the loading lever -is provided with a portion E2 whichis adapted to engage behind the end of the loclrbarV I1, and a little higher up theY loading lever is recesed asv shown at 63 so that if the loading lever isv pu'sheddownwardly, it moves into a position in which it is incapable of transmitting the pressure of the. loadingV spring to the lock'bar [1 Y The loading lever in this Vconstruction is adapted to be operated by the push pin 31 hav,- ing the knob l0 Yasalready described withreference to Figures l to 6. In this case the lower end of the push pin 31 instead of being chamfered or recessedV is provided with a lateral projection 54 which is adapted to' lock the secondary vactuating lever 65 which in this case is mounted onl a hollow spindle 66 adapted to be operated by an external lever' arm (not shown) forming the `secondary operating member on the exterior of the door. z

A;V light spring El is provided acting upon the secondary'actuating lever 65 which can be turned by the` exterior lever forming the secondary operating member against theaction of this spring causing one end 12 to press down on the top of the loading lever 53 andV move it into the position Yin which the recess 63 moves to a position oppo- Cil Y of, a primary actuating lever pivoted to the cassite to the lock bar I1 so that the loading spring y 54 becomes inoperative; l Y Further, as the loading lever 53 moves downwardly, the lower end of a portion B8 thereof acts upon the arm 59 of the primary actuating lever 25, wherebythe lock bar is moved back-into the retracted 'position'.l This'primary actuating lever is similar to the lever 25V shown in Figures 1 tol 5,'but the arm which engages the loading lever` is modied mainly by omitting the lug 33.

' 'In all three constructions the push pin 31 forms a stop for upward movement of the loading lever which in turn forms a stop for anti-clockwise movement of the primary 4actuating lever.

In the construction shown in Figures l to 5 and in Figure 6, the loading spring provides spring pressure tending to move the-push pin 31 upwardly, and Vin the construction shown in Figure 7, spring pressure tending to move the push pin 3l upwardly is provided by the springof the primary actuating lever operating through the loading lever.

In all three constructions the knob associated with the push pin has three positions spaced around its axis. In one of these positions it is locked against downward movement. In either of the other two positions it can be pushed downwardly to release the loch,V while in one of these two positions it operates to prevent the lock from being operatedfrorn the outside of the vehicle. v

ln the Construction shown in. Figures l to 5 and in 1figure 7,; the loch can be operated from the outside of vehicle, assuming that the knob has been turned to the appropriate position, against the action of lalight spring only, but in the construction shown in Figure 6, operation rom theeXterio-r of the vehicle is against the loading spring which'preferably provides a much heavier loading.

ing and having one arm engaging the lock bar and the other engaged by the loading lever, a light actuating spring acting on saidprimary actuating lever and urging the lock bar intothe projected position, and operating means forV moving thelock bar into the retracted'V position, said operating means acting to displace said loading lever from behind said lock bar and to rock said primary actuating lever so as-to move Vthe lock bar into the retracted position. l

2. lA lock having a casing containing a movable lock bar, a loading lever having one arm disposed behind said lock bar, andv mounted for pivoting and sliding motion, a loading spring acting on said loading lever and `opposing movement thereof, a primary actuating lever pivoted tothe casing andhaving one arm engaging the lock bar and the other engaged by the loading lever, a light actuating spring acting on said prima-ry: actuating lever and urging the lock bar into the projected position, a secondary actuating lever mounted on the pivot, of the primary actuating lever,.a lug on the primary actuating lever engaged by the edge of said secondary actuating lever so that movement of the latter in one direction'is transmitted to the primary actuating lever, a primary operating member `acting on the loading lever, and secondary operating member` acting on the secondary actuating lever.v

3.- A lock having a casing containing a movable lock bar, a loading lever having one arm disposed behind said' loclrbar, and mounted for pivoting and sliding motion, a loading spring acting on said loading lever and opposing movement thereof, a primary actuating lever pivoted to the Casing andhaving one arm engagingfthe lock bar andthe other engaged by the loading light actuating spring acting said primary actuating,r lever and urging the lock ber into the projected position,` a secondary actuating lever mounted on the pivot of the primary actuating lever, said secondary actuating lever havinga part adapted to act on the loading lever and to move its arm away from the end'or" the locl: bar, a lug on the primaryactuating lever engaged by the edge of said secondary actuatiz L; lever so that movement of the latter in one direction is transmitted to the primary actuating lever, a primary operating member acting on the loading lever, and a secondary operating member acting on the secondary actuating lever.

4. A lookhaving a casing containing a movable lock bar, a loading lever having one arm disposed behindsaid lock bar, and mounted for pivoting Y and sliding motion, a loading spring acting on lever, a

lever, a primary operating member formed as a rotatable push pin acting on the loading lever,

one endcf said push pin being recessed at one side, said push pin acting as a stop to lock said secondary actuating lever against movement except when said recessed side L:is disposed towards said lever, and a secondary4 operating member acting on the secondary actuating lever.y

5. A lock having a casing containing a movable lock bar, a loading lever having one arm disposed behind said lock bar, and mounted for pivoting and sliding motion, a loading spring acting on said loading lever and opposing movement thereof, av primary actuating lever pivoted to the casing and having lone arm engaging the lock'bar and the other engaged by the loading lever, a light actuating spring actingy on said primary actuating lever and urging the loclr bar into the projected position, a secondary actuating lever mounted on the pivot of the primary actuating lever, a lug on the primary actuating lever engaged by the edge oi said secondary actuating lever `so that movement of the latter in one direction is transmitted to the primary actuating lever, a primary operating member' formed as a rotatable push pin acting on the loadingA lever, an escutcheon supporting said push pin, said escutcheon having an opening through its wall, a spring mounted on the exterior of said escutcheon and having a projection which eX- tends through said opening, said push pin being provided with longitudinal grooves spaced around its circumference, which grooves are engaged in turn by said projection as the pin is turned on its own axis, said engagement serving to retain the pin in any one of a plurality of angular positions, one end of said push pin being reoessed at one side, said push pin acting as a stop to lock said secondary actuating lever against movement except when said recessed side is disposed towards said lever, and a secondary operating member acting on the secondary actuating lever.

6. A lock having a casing containing a movabie lock bar, a loading lever disposed behind said lock bar, said loading lever being mounted for movement in two directions, one in line with the lock bar, and one transversely to the length of the lock bar, a loading spring acting on said loading lever and opposing movement thereof in the direction in line with the lock bar and thus opposing retraction of the lock bar, a primary actuating lever pivoted to the casing and having one arm engaging the lock bar and the other engaged by the loading lever, a light actuating spring acting on said primary actuating lever, a primary operating member for rendering the loading spring ineiective for opposing the retraction of the lock bar, and for moving the lock bar into the retracted position, a secondary operating member for movingthe lock bar into the retracted position, means on the primary operating member for locking the secondary operating member, said primary operating member being movable into a plurality of positions, in one of which it locks the secondaryv operating member, and means for retaining the primary operating member in any of said positions.

'7. A lock according to claim 6, wherein the primary operating member is movable into any of three positions, in one of Which it is locked against movement for operating the lock bar and also locks the secondary operating member, in another of which it can be moved to Withdraw the lock bar but locks. the secondary operating member, and in the third of which it can `be moved to Withdraw the lock bar and permits the secondary operating member to be operated.

S. A lock according to claim 6, wherein the primary operating member is formed as apush pin mounted for endwise movement and for movement around its own axis, the latter movement permitting it to be moved into any one of three positions, means for retaining the primary operating member in any of said positions, in one of Which it is locked against movement for operating the lock bar and also locks the secondary operating member, in another of which it can be moved to withdraw the lock bar but locks the secondary operating member, and in the third of which it can be moved to withdraw the loclr'bar and permits the secondary operating member to be operated.

9. A lock according to claim 6, wherein the primary operating member is formed as a push pin mounted for endwise movement and for movement around its own axis, the latter movement permitting it to be moved into any one of three positions, the means for retaining the primary operating member inlany one of said positions comprising. an escutcheon supporting said push pin, said escutcheon having an opening through its Wall, a spring mounted on the exterior of said escutcheon and having a projection which extends through said opening, saidY push pin being provided with longitudinal groovesy spaced around its circumference, which grooves are engaged in turn by said projection as the pin is turned on its ovm axis.

10. A loci; having a casing containing a movable loclr bar, a loading lever having one arm disposed behind said lock bar, and mounted for pivoting and sliding motion, a loading spring acting on said loading lever and opposing movement thereof, a primary actuating lever pivoted to the casing and having one arm engaging the lock bar and the other engaged by the loading lever, a light actuating spring acting on said rimary actuating lever and urging the lock bar into the projected position, a secondary actuating lever mounted on the pivot of the primary actuating lever, a lug on the primary actuating lever engaged bythe edge of said secondary actuating lever so that movement of the latter in one direction is transmitted to the-primary actuating lever, a primary operating member formed as a rotatable push pin acting on the loading lever, a secondary operating member acting on the secondary actuating level', means on the primary operating member for locking the secondaryoperating member, said primary operating member being movable into a plurality of positions, in one of which it locks the secondary operating member, and means for retaining the primary operating member in any of said positions.

l1. A lock having a casing containing a movable lock bar, actuating means lightly loaded by an actuating into the normal projected position, a loading lever being mounted for movement in two directions, one in line with the lock bar, and one transversely to the length of the lock bar, a loading spring acting on said'loading lever and opposing movement thereof in the direction inline with the lock bar and thus opposing retraction of the loci; bar, and operating means for moving the lock bar into the retracted position, said operating means acting on the loading lever to move it transversely to the length of the lock spring, and urging said lock bar bar, so that the loading spring no longer opposes retraction of the lock bar, said operating means also moving the actuating means so as to retract; the lock bar.

12. A lock having a casing containing a movable lock bar, actuating means lightly loaded by an actuating spring, and urging said lock bar into the normal projected position, a loading lever disposed behind said lock bar, said loading lever having a slot engaged by a'pin fixed to the casing whereby said loading lever is mounted for movement in two directions, one in line with the lock bar, and onertransversely to the length of the lock bar, a loading spring acting on said loading lever and opposing movements thereof in the direction in line with the lock bar and thus opposing retraction ofthe lock bar, and operating means for moving the lock bar into the retracted position, said operating means acting on the loading lever to move it transversely to the length of the lock bar, so that the loading spring no longer opposes retraction of the lockV bar, said operating means also moving the actuating means so as to retract the lock bar.

13. A lock having a casing containing a movable lock bar, a loading lever disposed behind said lock bar, said loading lever being mounted for movement in two directions, one in line with the lock bar, and one transversely to the length of the lock bar, a loading spring acting on said loading lever and opposing movement thereof in the direction in line with the lock bar and thus opposing retraction of the lock bar, a primary actuating lever pivoted to the casing and having one arm engaging the lock Vbar and the other engaged by the loading lever, a vlight actuating spring acting on said primary actuating lever, a primary actuating member acting on the loading lever and a secondary operating member Operating said primary actuating lever,

v14. A lock having a casing containinga movable lock bar, a vloading lever disposed behind said lock bar, said loading lever being mounted for movement in two directions, one in line with the lock bar, and one transversely to the length of the lock bar, `a loading'spring acting on said loading lever and' opposing movement thereof in the direction in line with the lockbar and thus opposing retraction of the lock bar, a primary actuating lever pivoted to the casing and hav-V ing one arm engaging the lock bar and the other engaged by the loading lever, a light actuating spring acting on said primary actuating lever, a secondary actuating lever mounted on the pivot of the primary actuating lever, a primary operating member acting on the loading lever and a secondary operating lever acting on said secondary lever.

15. A lock having a casingv containing a movable lock bar, a loading'lever disposed behind said lock bar, said loading lever having a long arm disposed behind and substantially in line with the lock bar, said loading Vlever having a slot engaged by a pin xed tothe casing whereby said loading lever is mounted for movement in two directions, one in line with the lock bar, and one transversely to the length of the lock bar, a loading spring acting on said loading lever and opposing movement thereof in the direction in line with the lock bar and thus opposing retraction of the lock bar, a primary actuating vlever pivoted to the casing and having one arm engaging the lock bar and the other engaged by the loading lever, a light actuating spring acting on said primary actuating lever, a secondary actuating lever mountedon the pivot of the prmary actuating lever, a lug on the primary actuating lever engaged by the edge of said secondary actuating lever so that movement of the latter in one direction is transmitted to the primary actuating lever, a primary operating member acting on the loading lever and a secondary operating lever acting on said secondary actuaty ing lever. l p

16. A lock having a casing containing a movable lock bar, a loading lever mounted for pivoted and sliding movement, said loading lever being disposed transversely to the lock bar and behind same, and having one edge directed towards the end of the lock bar, said edge having a notch, a pivoted arm acting on said loading lever, a loading spring actingron said arm, a stop on the casing engaging the loading lever and limiting its movement towards the lock bar, a primary actuating lever pivoted to the casing and having one arm engaging the lock bar and the other engaged by the loading lever, a light actuating spring acting on said primary actuating lever, and operating means adapted to slide said loading lever endwise so as to bring the notch inl the edge thereof opposite to the end of the lock bar, and to rock said primary actuating lever so as to move the lock bar into the retracted position.

17. A lock having a casing containing a movable lock bar, a loading lever .mounted for pivoted and sliding movement, said loading lever being disposed transversely to the lock bar and behind same, and having one edge directed towards the end of the lock bar, said edge having a notch, a pivoted arm acting on said loading lever, a loading spring acting on said arm, a stop on the casing engaging the loading lever and limiting its movement towardsthe lock bar, a primary actuating lever pivoted to the casing and having one arm engaging the lock bar and the other engaged by the loading lever, a light actuating spring acting on said primary actuating lever, a primary operating member acting on the loading lever, a secondary actuating lever, a light spring acting thereon, and a secondary operating member acting on the secondary actuating lever.

18. A lock having a casing containing a movable lock bar, actuating means lightly loaded by an actuating spring and urging said loci; bar into the normal projected position, a loading lever disposed behind said lock bar, said loading lever` being mounted for movement in two directions, one in line with the lock bar and one transversely to thev length of the lock bar, a loading spring acting on said loading lever and'opposing movement thereof in the direction in line with the lock bar and Ythus opposing retraction of the lock bar, and operating means formed as an endwise movable push pin projecting from the edge of the casing, said operating means acting on the loading lever to move it transversely to the length of the lock bar, so that the loading spring no longer opposes retraction of the lock bar, said operating means also moving the actuating means so as to retract the lock bar.

JENNIE IRENE BOOTH. JOHN HOLT BOOTH. 

